Explain why the following definition of the absolute value of a real number x is either correct

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Explain why the following definition of the absolute value of a real number x is either correct or incorrect (the symbol ≥ means “is equal to or greater than”): If x ≥ 0, then |x| = x; if x < 0, then |x| = −x.

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Basic Technical Mathematics

ISBN: 9780137529896

12th Edition

Authors: Allyn J. Washington, Richard Evans

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